[ 43.477868][ T23] audit: type=1800 audit(1575335173.728:26): pid=8057 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.512302][ T23] audit: type=1800 audit(1575335173.728:27): pid=8057 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 43.533515][ T23] audit: type=1800 audit(1575335173.728:28): pid=8057 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.315448][ T23] audit: type=1800 audit(1575335174.588:29): pid=8057 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.135' (ECDSA) to the list of known hosts. 2019/12/03 01:06:23 fuzzer started 2019/12/03 01:06:25 dialing manager at 10.128.0.26:38907 2019/12/03 01:06:25 syscalls: 2697 2019/12/03 01:06:25 code coverage: enabled 2019/12/03 01:06:25 comparison tracing: enabled 2019/12/03 01:06:25 extra coverage: extra coverage is not supported by the kernel 2019/12/03 01:06:25 setuid sandbox: enabled 2019/12/03 01:06:25 namespace sandbox: enabled 2019/12/03 01:06:25 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 01:06:25 fault injection: enabled 2019/12/03 01:06:25 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 01:06:25 net packet injection: enabled 2019/12/03 01:06:25 net device setup: enabled 2019/12/03 01:06:25 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 01:06:25 devlink PCI setup: PCI device 0000:00:10.0 is not available 01:06:26 executing program 0: mkdir(&(0x7f0000000240)='./file1\x00', 0x0) mount(&(0x7f0000000040)=@nullb='ubi8!nu\\lb0\x00', &(0x7f0000000080)='./file1\x00', &(0x7f00000000c0)='ubifs\x00', 0x0, 0x0) 01:06:26 executing program 1: r0 = timerfd_create(0x0, 0x0) close(r0) openat$ptmx(0xffffffffffffff9c, &(0x7f00000002c0)='/dev/ptmx\x00', 0x0, 0x0) ioctl$TIOCSSERIAL(r0, 0x541f, &(0x7f0000000240)={0x0, 0x0, 0x0, 0x0, 0xf568, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) syzkaller login: [ 56.536071][ T8220] IPVS: ftp: loaded support on port[0] = 21 01:06:26 executing program 2: r0 = socket(0x10, 0x3, 0x0) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000600)={'bridge_slave_1\x00', 0x0}) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000640)=ANY=[@ANYBLOB="7c0000002400070500"/20, @ANYRES32=r2, @ANYBLOB="00000000ffffffff0000000008000e0000000000080001007366710048000100000000170000000000000000800100"/100], 0x7c}}, 0x0) sendmmsg$alg(r0, &(0x7f0000000140), 0x93b657, 0x0) [ 56.720230][ T8220] chnl_net:caif_netlink_parms(): no params data found [ 56.733996][ T8223] IPVS: ftp: loaded support on port[0] = 21 [ 56.831927][ T8220] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.842914][ T8220] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.851254][ T8220] device bridge_slave_0 entered promiscuous mode [ 56.897981][ T8220] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.906750][ T8220] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.915343][ T8220] device bridge_slave_1 entered promiscuous mode 01:06:27 executing program 3: clone(0x4000010006dfd, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = syz_open_procfs(0x0, &(0x7f0000000140)='uid_map\x00') r1 = gettid() tkill(r1, 0x40020000000c) write$P9_RREADDIR(r0, 0x0, 0x0) [ 56.961366][ T8220] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.980690][ T8227] IPVS: ftp: loaded support on port[0] = 21 [ 56.984628][ T8223] chnl_net:caif_netlink_parms(): no params data found [ 57.006287][ T8220] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.101402][ T8223] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.114614][ T8223] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.122453][ T8223] device bridge_slave_0 entered promiscuous mode [ 57.133376][ T8220] team0: Port device team_slave_0 added [ 57.148998][ T8220] team0: Port device team_slave_1 added [ 57.173273][ T8223] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.180425][ T8223] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.194115][ T8229] IPVS: ftp: loaded support on port[0] = 21 [ 57.205864][ T8223] device bridge_slave_1 entered promiscuous mode 01:06:27 executing program 4: prlimit64(0x0, 0xe, &(0x7f0000000280)={0x9, 0xff}, 0x0) sched_setattr(0x0, &(0x7f0000000040)={0x30, 0x2, 0x0, 0x0, 0x3}, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) socket$packet(0x11, 0x0, 0x300) r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000100)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c) sendmmsg(r0, &(0x7f00000092c0), 0x4ff, 0x0) [ 57.275970][ T8220] device hsr_slave_0 entered promiscuous mode [ 57.353316][ T8220] device hsr_slave_1 entered promiscuous mode [ 57.437509][ T8232] IPVS: ftp: loaded support on port[0] = 21 [ 57.468525][ T8223] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link 01:06:27 executing program 5: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = epoll_create1(0x0) epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r0, &(0x7f0000000180)={0x80000003}) epoll_pwait(r1, &(0x7f0000000000)=[{}], 0x1, 0x0, 0x0, 0x0) [ 57.539404][ T8223] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.575518][ T8220] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.636764][ T8220] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.686496][ T8227] chnl_net:caif_netlink_parms(): no params data found [ 57.705228][ T8220] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.746405][ T8223] team0: Port device team_slave_0 added [ 57.771129][ T8235] IPVS: ftp: loaded support on port[0] = 21 [ 57.788368][ T8223] team0: Port device team_slave_1 added [ 57.794607][ T8220] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.864973][ T8227] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.872038][ T8227] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.881301][ T8227] device bridge_slave_0 entered promiscuous mode [ 57.945083][ T8223] device hsr_slave_0 entered promiscuous mode [ 57.993394][ T8223] device hsr_slave_1 entered promiscuous mode [ 58.063157][ T8223] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.079290][ T8227] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.088907][ T8227] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.096699][ T8227] device bridge_slave_1 entered promiscuous mode [ 58.169690][ T8227] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.194873][ T8229] chnl_net:caif_netlink_parms(): no params data found [ 58.219455][ T8227] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.242819][ T8227] team0: Port device team_slave_0 added [ 58.253212][ T8223] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.278099][ T8223] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.332661][ T8227] team0: Port device team_slave_1 added [ 58.351297][ T8229] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.358509][ T8229] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.366522][ T8229] device bridge_slave_0 entered promiscuous mode [ 58.376603][ T8223] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.448438][ T8223] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.509885][ T8229] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.518137][ T8229] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.525982][ T8229] device bridge_slave_1 entered promiscuous mode [ 58.542512][ T8232] chnl_net:caif_netlink_parms(): no params data found [ 58.605717][ T8227] device hsr_slave_0 entered promiscuous mode [ 58.663816][ T8227] device hsr_slave_1 entered promiscuous mode [ 58.713138][ T8227] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.749300][ T8229] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.766844][ T8220] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.789076][ T8229] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.841086][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.850690][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.861082][ T8229] team0: Port device team_slave_0 added [ 58.868346][ T8229] team0: Port device team_slave_1 added [ 58.874348][ T8227] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.925361][ T8227] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.965670][ T8232] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.972755][ T8232] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.980810][ T8232] device bridge_slave_0 entered promiscuous mode [ 59.000141][ T8235] chnl_net:caif_netlink_parms(): no params data found [ 59.015690][ T8220] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.023300][ T8227] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 59.065066][ T8232] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.072152][ T8232] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.080285][ T8232] device bridge_slave_1 entered promiscuous mode [ 59.111640][ T8232] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.122592][ T8232] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.136371][ T8227] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.232274][ T8232] team0: Port device team_slave_0 added [ 59.265176][ T8229] device hsr_slave_0 entered promiscuous mode [ 59.333311][ T8229] device hsr_slave_1 entered promiscuous mode [ 59.383162][ T8229] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.395356][ T2709] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.404494][ T2709] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.412869][ T2709] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.420055][ T2709] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.428499][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.438469][ T8232] team0: Port device team_slave_1 added [ 59.450931][ T8235] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.458202][ T8235] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.468614][ T8235] device bridge_slave_0 entered promiscuous mode [ 59.476945][ T8235] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.484099][ T8235] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.491669][ T8235] device bridge_slave_1 entered promiscuous mode [ 59.556080][ T8232] device hsr_slave_0 entered promiscuous mode [ 59.593347][ T8232] device hsr_slave_1 entered promiscuous mode [ 59.653169][ T8232] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.663398][ T8235] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.692290][ T8229] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 59.757259][ T8235] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.768751][ T2709] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.777681][ T2709] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.786227][ T2709] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.793410][ T2709] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.809355][ T8223] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.823650][ T8229] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 59.855777][ T8229] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 59.938371][ T8229] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.014692][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.023569][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.032093][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.040805][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.049144][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.082574][ T8220] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 60.094220][ T8220] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 60.107605][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.116756][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.126007][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.134509][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.143445][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.152046][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.171793][ T8235] team0: Port device team_slave_0 added [ 60.179994][ T8235] team0: Port device team_slave_1 added [ 60.186703][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.205636][ T8232] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 60.246644][ T8232] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 60.284794][ T8232] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 60.353216][ T8232] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 60.394724][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.402291][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.412703][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.420427][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.431218][ T8227] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.445576][ T8220] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.456237][ T8223] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.517068][ T8235] device hsr_slave_0 entered promiscuous mode [ 60.564231][ T8235] device hsr_slave_1 entered promiscuous mode [ 60.603253][ T8235] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.619005][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.626813][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.634762][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.643494][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.651744][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.658856][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.667248][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.675928][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.684254][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.691386][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.702718][ T8227] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.734871][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.742702][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.755508][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.771326][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.781022][ T8242] UBIFS error (pid: 8242): cannot open "ubi8!nu\lb0", error -19 [ 165.792986][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 165.807640][ C1] (detected by 1, t=10503 jiffies, g=6121, q=42) [ 165.814064][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10504 (4294953727-4294943223), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 165.827409][ C1] rcu_preempt R running task 29032 10 2 0x80004008 [ 165.835296][ C1] Call Trace: [ 165.838570][ C1] [ 165.841419][ C1] sched_show_task+0x40f/0x560 [ 165.846187][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 165.851469][ C1] update_process_times+0x12d/0x180 [ 165.856658][ C1] tick_sched_timer+0x263/0x420 [ 165.861500][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.867152][ C1] __hrtimer_run_queues+0x403/0x840 [ 165.872439][ C1] hrtimer_interrupt+0x38c/0xda0 [ 165.877408][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.882683][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 165.888231][ C1] apic_timer_interrupt+0xf/0x20 [ 165.893153][ C1] [ 165.896082][ C1] RIP: 0010:mod_memcg_page_state+0x2b/0x190 [ 165.901983][ C1] Code: 48 89 e5 41 57 41 56 41 54 53 41 89 f6 48 89 fb e8 da 28 2e 00 48 83 c3 38 48 89 d8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df <42> 80 3c 20 00 74 08 48 89 df e8 b6 9f 69 00 48 8b 1b 48 85 db 0f [ 165.921942][ C1] RSP: 0018:ffffc90000d0fc18 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 [ 165.930364][ C1] RAX: 1ffffd400051768f RBX: ffffea00028bb478 RCX: ffff8880a9de8280 [ 165.938326][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00028bb440 [ 165.946299][ C1] RBP: ffffc90000d0fc38 R08: 000000000003a768 R09: ffffed10151b7aaf [ 165.954258][ C1] R10: ffffed10151b7aaf R11: 0000000000000000 R12: dffffc0000000000 [ 165.962234][ C1] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880a8dbd568 [ 165.970215][ C1] ? mod_memcg_page_state+0x16/0x190 [ 165.975580][ C1] free_thread_stack+0x168/0x590 [ 165.980506][ C1] put_task_stack+0xa3/0x130 [ 165.985084][ C1] finish_task_switch+0x3f1/0x550 [ 165.990103][ C1] __schedule+0x9a8/0xcc0 [ 165.994427][ C1] schedule+0x181/0x210 [ 165.998572][ C1] schedule_timeout+0x14f/0x240 [ 166.003408][ C1] ? run_local_timers+0x120/0x120 [ 166.008424][ C1] rcu_gp_kthread+0xed8/0x1770 [ 166.013198][ C1] kthread+0x332/0x350 [ 166.017265][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 166.022364][ C1] ? kthread_blkcg+0xe0/0xe0 [ 166.026941][ C1] ret_from_fork+0x24/0x30 [ 166.032314][ C1] rcu: rcu_preempt kthread starved for 10525 jiffies! g6121 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 166.043393][ C1] rcu: RCU grace-period kthread stack dump: [ 166.049266][ C1] rcu_preempt R running task 29032 10 2 0x80004008 [ 166.057366][ C1] Call Trace: [ 166.060650][ C1] [ 166.063502][ C1] sched_show_task+0x40f/0x560 [ 166.068267][ C1] rcu_check_gp_kthread_starvation+0x170/0x1b0 [ 166.074413][ C1] rcu_sched_clock_irq+0x17d3/0x1ad0 [ 166.079780][ C1] update_process_times+0x12d/0x180 [ 166.085141][ C1] tick_sched_timer+0x263/0x420 [ 166.090002][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.095534][ C1] __hrtimer_run_queues+0x403/0x840 [ 166.100733][ C1] hrtimer_interrupt+0x38c/0xda0 [ 166.105676][ C1] ? debug_smp_processor_id+0x9/0x20 [ 166.110948][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 166.116479][ C1] apic_timer_interrupt+0xf/0x20 [ 166.121399][ C1] [ 166.124345][ C1] RIP: 0010:mod_memcg_page_state+0x2b/0x190 [ 166.130246][ C1] Code: 48 89 e5 41 57 41 56 41 54 53 41 89 f6 48 89 fb e8 da 28 2e 00 48 83 c3 38 48 89 d8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df <42> 80 3c 20 00 74 08 48 89 df e8 b6 9f 69 00 48 8b 1b 48 85 db 0f [ 166.150622][ C1] RSP: 0018:ffffc90000d0fc18 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 [ 166.159065][ C1] RAX: 1ffffd400051768f RBX: ffffea00028bb478 RCX: ffff8880a9de8280 [ 166.167030][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00028bb440 [ 166.174989][ C1] RBP: ffffc90000d0fc38 R08: 000000000003a768 R09: ffffed10151b7aaf [ 166.182947][ C1] R10: ffffed10151b7aaf R11: 0000000000000000 R12: dffffc0000000000 [ 166.190909][ C1] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880a8dbd568 [ 166.198889][ C1] ? mod_memcg_page_state+0x16/0x190 [ 166.204247][ C1] free_thread_stack+0x168/0x590 [ 166.209180][ C1] put_task_stack+0xa3/0x130 [ 166.213758][ C1] finish_task_switch+0x3f1/0x550 [ 166.218870][ C1] __schedule+0x9a8/0xcc0 [ 166.223211][ C1] schedule+0x181/0x210 [ 166.227354][ C1] schedule_timeout+0x14f/0x240 [ 166.232188][ C1] ? run_local_timers+0x120/0x120 [ 166.237201][ C1] rcu_gp_kthread+0xed8/0x1770 [ 166.241994][ C1] kthread+0x332/0x350 [ 166.246081][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 166.251200][ C1] ? kthread_blkcg+0xe0/0xe0 [ 166.255789][ C1] ret_from_fork+0x24/0x30